ASP.NET MVC Filter- 登录验证 【异步刷新列表视图】

public class TAjaxListLoginValidateAttribute : FilterAttribute, IAuthorizationFilter
{
public void OnAuthorization(AuthorizationContext filterContext)
{
try
{
if (!TUser.IsLogin())
{
var viewResult = new ViewResult();
viewResult.ViewName = "~/Views/Error/NeedLogin.cshtml";
if (filterContext.HttpContext.Request.UrlReferrer != null)
viewResult.ViewBag.ReturnUrl = HttpUtility.UrlEncode(filterContext.HttpContext.Request.UrlReferrer.AbsolutePath);
filterContext.Result = viewResult;
}

}
catch (Exception ex)
{

Log.Fatal(ex, "TAjaxLoginValidateAttribute::OnAuthorization(AuthorizationContext filterContext)", TLogMessage.FilterError);
}
}
}